package com.etc.systax;

// Demonstrates the mathematical operators
import java.util.*;

public class MathTest {
	// Create a shorthand to save typing:
	static void prt(String s) {
		System.out.println(s);
	}

	// shorthand to print a string and an int:
	static void pInt(String s, int i) {
		prt(s + " = " + i);
	}

	// shorthand to print a string and a float:
	static void pFlt(String s, float f) {
		prt(s + " = " + f);
	}

	public static void main(String[] args) {
		// Create a random number generator,
		// seeds with current time by default:
		Random rand = new Random();
		int i, j, k;
		// '%' limits maximum value to 99:
		j = rand.nextInt() % 100;
		k = rand.nextInt() % 100;
		pInt("j", j);
		pInt("k", k);
		i = j + k;
		pInt("j + k", i);
		i = j - k;
		pInt("j - k", i);
		i = k / j;
		pInt("k / j", i);
		i = k * j;
		pInt("k * j", i);
		i = k % j;
		pInt("k % j", i);
		j %= k;
		pInt("j %= k", j);
		// Floating-point number tests:
		float u, v, w; // applies to doubles, too
		v = rand.nextFloat();
		w = rand.nextFloat();
		pFlt("v", v);
		pFlt("w", w);
		u = v + w;
		pFlt("v + w", u);
		u = v - w;
		pFlt("v - w", u);
		u = v * w;
		pFlt("v * w", u);
		u = v / w;
		pFlt("v / w", u);
		// the following also works for
		// char, byte, short, int, long,
		// and double:
		u += v;
		pFlt("u += v", u);
		u -= v;
		pFlt("u -= v", u);
		u *= v;
		pFlt("u *= v", u);
		u /= v;
		pFlt("u /= v", u);

	}
} 

